<html>
  <head>
    <meta charset="utf-8" />
    <title>实时监控画面</title>
  </head>
  <body>
    <h1>OpenCV摄像头视频流显示</h1>
    <img src="{{ url_for('video_feed') }}">
  <a href="test">回到主界面</a>
  </body>
</html>
